mineral

White Quartz

Silicon Dioxide (SiO2)

AI-generated identification · may be incorrect

Hardness: 7 (Mohs scale); Color: White, milky, or colorless; Luster: Vitreous to greasy; Crystal structure: Trigonal/Hexagonal; Cleavage: None (conchoidal fracture); Specific Gravity: 2.65

Hardness: 7 (Mohs scale)
Color: White, milky, or colorless
Luster: Vitreous to greasy

Identified April 20, 2026More mineral →

Explore White Quartz in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

Physical properties

Hardness: 7 (Mohs scale); Color: White, milky, or colorless; Luster: Vitreous to greasy; Crystal structure: Trigonal/Hexagonal; Cleavage: None (conchoidal fracture); Specific Gravity: 2.65

Formation & geological history

Forms in igneous, metamorphic, and sedimentary environments. Most commonly crystallizes from cooling magma or precipitates from hydrothermal veins. It is found in earth's crust across all geological ages.

Uses & applications

Used in glassmaking, electronics (piezoelectric properties), abrasives, construction aggregate, and as semi-precious gemstones in jewelry.

Geological facts

Quartz is the second most abundant mineral in Earth's continental crust. 'Milky quartz' gets its white color from tiny fluid inclusions of gas or liquid trapped during crystal growth.

Field identification & locations

Identify by its hardness (it will scratch glass and steel), lack of cleavage, and waxy/glassy appearance. It is ubiquitous in mountainous regions and riverbeds worldwide.